Magnetic properties of Nd 0.5 Pb 0.5- x Sr x MnO 3 materials

Lu Yi; Li Qing-An; Di Nai-Li; Xiao Ma; Zhi-qi Kou; Luo Zhi; Cheng Zhao-Hua

doi:10.1088/1009-1963/12/7/316

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Magnetic properties of Nd _0.5 Pb _{0.5- x} Sr _x MnO ₃ materials

Lu Yi Li Qing-An Di Nai-Li Xiao Ma Zhi-qi Kou Luo Zhi Cheng Zhao-Hua

Year: 2003 Journal: Chinese Physics Vol: 12 (7)Pages: 789-791 Publisher: IOP Publishing

DOI: 10.1088/1009-1963/12/7/316

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Abstract

The structure and magnetic properties of Nd0.5Pb0.5-xSrxMnO3 (0⩽x⩽0.4) manganites were systematically investigated. Significant changes in Curie temperature and metal-insulator (MI) transition temperature of the samples were observed. All samples exhibited a transition from paramagnetic semiconducting to ferromagnetic metallic state. Curie temperatureTC and the MI transition temperature Tp increased with increasing Sr content. We attributed these behaviours to the enhancing of both the double exchange mechanism and the Jahn-Teller electron-phonon coupling.

Keywords:

Curie temperature Materials science Condensed matter physics Ferromagnetism Paramagnetism Metal–insulator transition Transition temperature Colossal magnetoresistance Magnetic semiconductor Curie Curie–Weiss law Metal Magnetoresistance Superconductivity Magnetic field Physics

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Magnetic and transport properties of perovskites and related materials

Physical Sciences → Materials Science → Electronic, Optical and Magnetic Materials

Magnetic Properties of Alloys

Physical Sciences → Materials Science → Electronic, Optical and Magnetic Materials

High-pressure geophysics and materials

Physical Sciences → Earth and Planetary Sciences → Geophysics

Magnetic properties of Nd _0.5 Pb _{0.5- x} Sr _x MnO ₃ materials

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